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Finding the Fourth Proportional to 562,738.12, 776,576.52 and 321,020.24

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Solution

The fourth proportional to 562,738.12, 776,576.52 and 321,020.24 is: 443,006.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,738.12 : 776,576.52 = 321,020.24 : x
  2. Step 2: Convert to fraction form
    562,738.12/776,576.52 = 321,020.24/x
  3. Step 3: Cross multiply
    562,738.12x = 776,576.52 × 321,020.24
  4. Step 4: Simplify right side
    562,738.12x = 249,296,780,828.77
  5. Step 5: Solve for x
    x = 249,296,780,828.77/562,738.12
  6. Step 6: Final answer
    x = 443,006.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.